Cooling system for electric apparatus.



No. 886,073. 7 PATENTED APR. 28', 1908 K. G. RANDALL & C. B. GIBSON. COOLING SYSTEM FOR ELECTRIC APPARATUS.

APPLICATION FILED AUG. 3. 1907.

2 SHEETS-SHEET 1.

INVENTORS WITNESSES:

ATTSRNEY No. 886,078. v PATENTED APR. 28- 1908. K. O. RANDALL & O. B. GIBSON. COOLING SYSTEM FOR ELECTRIC APPARATUS.

APPLICATION FILED AUG. 3. 1907. 2 SHEETS-SHEET 2.

INVENTORS ATTORNEY WITNESSES:

UNITED STATES Parana. OFFICE.

KARL C. RAN-DAlJL, OF EDGEWOOD PARK, AND CHARLES B. GIBSON, OF WILKINSBURG, PENN- SYLVANIA, ASSIGNORS TO WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A

CORPORATION OF PENNSYLVANIA.

COOLING SYSTEM FOR. ELECTRIC APPARATUS.

Specification of Letters Patent.

Patented April 28, 1908.

Application filed. August 3, 1907. Serial No. 386,915.

: and CHARLES B. GIBSON, citizens of the United States, and residents, respectively, of

,ject to provide improved means for regulat-.

Edgewood Park and Wilkinsburg, both in the count of Allegheny. and State of Pennsylvania, ave invented a new and useful improvement in Cooling Systems for Electric Apparatus, of which the following is a specification.

Our invention relates to cooling systems for electrical apparatus and it has for its obmg the circulation of insulating fluid through a plurality of tanks or cases which are connected in multiple and in which transformers or other electrical devices are contained.

Three or more large electrical. transformers are frequently in close roximity to each other in power plants and stations. and it is often desirable to provide for the circulation of insulating fluid through their containing tanks. This result has heretofore been accomplished by providin a plurality of separate cooling systems eac 1 of which comprised a motor and a fluid pump, but, in such cases,

. an unnecessary expense was involved by reason of the multiplicity of auxiliary apparatus.

In order that a luralit of transformer tanks may be supp led wit 1 insulating fluid from a single source, it is necessary to provide meansfor automatically regulating the 1 circulation through the casing of each trans-v shows the relative position former so as to avoid the possibility of one of the tanks being over supplied, while one or more of the other tanks which are connected in multiple with it, are supplied with'an insufiicient quantity of cooling fluid.

The aforesaid objective results are accomplished in the system of our present inven: tion', a convenient embodiment of which is illustrated in the accompanying drawings.

Figure 1 is a diagrammatic lan view which 0 the apparatus embodied in the system and Fig. 2'1s an elevation ofa single transformer, the casing of which is partially broken away to disclose the inlet port and the valve-regulating means, which are representative of those employed supplied with insulating and cooling fluid by a single pump 4 through pipes 5, 6, and 7. A circulation of the liquid is maintained b the pump, the tanks being connected, throng a plurality of cooling chambers 8, 9, and 10, to a common return pi e 11 from which the pump is supplied. Bee 1 of t ecooling chamers comprises a tank or casing 12 in which cooling pipes of helical io'r'mlmay be located,

air, by means of supply and} discharge ipes 13. In order to prevent a reversal of ireccheck valves 14 are locate; in the supply pipes. r

The core member 17 of the transformer is on the bottom of the tank and the inlet pi e is extended, after it enters the tank near t e uid in the tank risesabove or falls below predetermined values, the valve is automatically adjusted to control the amount of liquid a mitted.

We claim as our invention: 1. The combination with electrical appaehambers, and means for maintaining a circulation of cooling fluid through the means for kee ing the fluid at substantially the samcleve in all the tanks.

2. The combinationwith a plurality of electric transformers, fiuid-containing tanks therefor, cooling chambers ,and means for throu h the tanks and the chambers, a throttle va ve in the supply line of each tank and meansfor autom atically controllingjhe throttle valve.

3. The combination plurality 0i other electric apparatus may be disposed, are i said ipes being supplied with a continuous circu ation of cooling .fiuid, such as water or;

tion of flow through the tra. stormer tanks,

'ratus, fluid containing tanks therefor, coolmg '70 supported upon a hollow base 18 which rests top, in order to supply cooling fluid directly v parts being suchthat as the level of the liqtanks, of

maintaining a circulation of insulating fluid electric transformers, fluid-containing tanks subscribed our names this 31st day of July,

therefor, coolirfig chamlbers an? T mealis for 1907.

maintaining t e circu ation 0 insu atin fluid through the tanks and the chambers, 0 I figifigi fi 5 a throttle valve in the s11 ply line of each J tank and floats for control ing the openings Witnesses:

of the valves. DUDLEY H. BOWEN,

In testimony whereof, we have hereunto BIRNEY HINEB. 

